| 铁活化天然斜发沸石吸附水中氟的研究 |
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| 引用本文： | 苗茵,刘晓飞,李曼尼.铁活化天然斜发沸石吸附水中氟的研究[J].内蒙古大学学报(自然科学版),2005,36(6):647-652. |
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| 作者姓名： | 苗茵 刘晓飞 李曼尼 |
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| 作者单位： | 内蒙古大学化学化工学院,呼和浩特,010021 |
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| 摘 要： | 用2%N aOH预处理,再经5%F eC l3静态热浸渍和动态热浸渍的铁活化斜发沸石矿样(3#和4#),对水中氟离子的吸附能力有了明显提高,饱和吸附量分别达到664、788 m g/kg,其吸附行为分别属指数型和S型等温线.用D-R方程线性拟合发现3#矿样化学吸附为主,4#矿样化学吸附和物理吸附兼有.吸附机理的差异主要来自铁活化引起的矿样比表面积、孔分布以及表面极性的不同.
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| 关 键 词： | 斜发沸石 铁活化 水中氟 吸附机理 |
| 文章编号： | 1000-1638(2005)06-0647-06 |
| 收稿时间： | 2005-05-09 |
| 修稿时间： | 2005年5月9日 |
Adsorption of Fluoride from Drinking Water by Iron-activated Clinoptilolites |
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| MIAO Yin,LIU Xiao-fei,LI Man-ni.Adsorption of Fluoride from Drinking Water by Iron-activated Clinoptilolites[J].Acta Scientiarum Naturalium Universitatis Neimongol,2005,36(6):647-652. |
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| Authors: | MIAO Yin LIU Xiao-fei LI Man-ni |
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| Institution: | College of Chemistry and Chemical Engineering, NeiMongol University, Hohhot 010021, PRC |
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| Abstract: | Two iron activated clinoptilolites(3~# and 4~#) were studied to determine their adsorption capacities of fluoride from drinking water.The clinoptilolites were prepared by the static and dynamic thermal impregnation method with 2% NaOH and 5% FeCl_3 solutions,respectively.The results showed that their adsorption capacities were enhanced obviously,their saturated adsorption capacities were 664 and 788 mg/kg.respectively and their adsorption isotherms belonged to the exponential type and S-type respectively.The linear fitting of D-R isotherm equation showed that the adsorption behavior was the chemical adsorption mainly in sample 3~# and both chemical and physical adsorption in samples 4~#.The difference of adsorption behaviour was from the difference of specific area,pore distribution and surface polarization of two samples. |
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| Keywords: | clinoptilolite iron activation fluoride from water adsorption mechanism |
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